# When · Days That Matter vs 倒计时

The clearest difference is in-app purchases: 倒计时 at none against When · Days That Matter's 1. 倒计时 also leads on iOS requirement (13.0 vs 17.0). On price there is nothing between them.

Both are free to download. When · Days That Matter sells 1 one-off in-app purchase. 倒计时 asks for nothing beyond the download.

## The numbers

| Metric | When · Days That Matter | 倒计时 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Size | 6 MB | 6 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | **iPhone** | — |
| Age rating | 4+ | 4+ |
| Developer | [杰龙 刘](https://appshunter.io/developer/1481214183) | [爱丽 周](https://appshunter.io/developer/1651181909) |

## What reviewers say

### When · Days That Matter

[App page](https://appshunter.io/ios/app/when-days-that-matter/id1616365331)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| When Premium · Lifetime Access | $0.99 | one-time |


### 倒计时

[App page](https://appshunter.io/ios/app/id6476398226)

**In-app purchases:** none


## Frequently asked questions

### Is When · Days That Matter free?

When · Days That Matter is free to download, with in-app purchases available.

### Is 倒计时 free?

倒计时 is free to download, with no in-app purchases.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*